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我有一个MVC 5应用程序，我使用的for循环，所以我可以绑定一个集合时传回控制器。这适用于我所有的属性，除了基于DropDownFor类型的属性。MVC枚举模型绑定在For循环
的问题是该属性的名称没有设置成“产品[0] .TypeOfSubscription
我试图3种不同的方式：该第一2方法最终获得的名称[0] .TypeOfSubscription和第三个具有正确名称的产品[0] .TypeOfSubscription，但没有绑定发生时，我将它传回控制器。
我认为问题是第三个选项是绑定，但因为它隐藏它没有得到分配的选定值。
@Html.EnumDropDownListFor(modelItem => Model[i].TypeOfSubscription)
@Html.EnumDropDownListFor(modelItem => Model[i].TypeOfSubscription,
new { name = "product[" + @i + "].TypeOfSubscription"})
@Html.Hidden("product[" + @i + "].TypeOfSubscription",
Model[i].TypeOfSubscription)
型号
public class VmStoreProducts
{
public VmStoreProducts()
{
NoOfUsers = 1;
}
public enum SubscriptionType
{
Monthly,
Annual
}
public int MojitoProductId { get; set; }
[Display(Name = "Category")]
public string ProductCategory { get; set; }
public virtual string Name { get; set; }
public string Description { get; set; }
[Display(Name = "Image")]
public byte[] ImageData { get; set; }
[Display(Name = "Type of Subscription")]
public SubscriptionType TypeOfSubscription { get; set; }
public decimal Price { get; set; }
[Display(Name = "No. of Users")]
public int NoOfUsers { get; set; }
[Display(Name = "Total Price")]
[DisplayFormat(DataFormatString = "{0:C}")]
public decimal TotalPrice { get; set; }
}
For循环 - 查看
@model PagedList.IPagedList<VmStoreProducts>
@using Mojito.Domain
@using PagedList.Mvc;
<link href="~/Content/PagedList.css" rel="stylesheet" type="text/css" />
@{
ViewBag.Title = "Index";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<h2>Mojito Products</h2>
<div class="col-md-9"></div>
<div class="col-md-3">
@using (Html.BeginForm("Index", "MojitoProducts", FormMethod.Get))
{
<p>
@Html.TextBox("SearchString", ViewBag.CurrentFilter as string)
<input type="submit" value="Search" />
</p>
}
</div>
@using (Html.BeginForm("AddToCart", "ShoppingCart", FormMethod.Post))
{
<table class="table">
<tr>
<th>
@Html.DisplayNameFor(model => model.FirstOrDefault().ImageData)
</th>
<th>
@Html.ActionLink("Category", "Index", new { sortOrder = ViewBag.SortByCategory, currentFilter = ViewBag.CurrentFilter })
</th>
<th>
@Html.ActionLink("Product", "Index", new { sortOrder = ViewBag.SortByProduct, currentFilter = ViewBag.CurrentFilter })
</th>
<th>
@Html.DisplayNameFor(model => model.FirstOrDefault().Description)
</th>
<th>
@Html.DisplayNameFor(model => model.FirstOrDefault().TypeOfSubscription)
</th>
<th>
@Html.ActionLink("Price", "Index", new { sortOrder = ViewBag.SortByPrice, currentFilter = ViewBag.CurrentFilter })
</th>
<th>
@Html.DisplayNameFor(model => model.FirstOrDefault().NoOfUsers)
</th>
<th>
@Html.DisplayNameFor(model => model.FirstOrDefault().TotalPrice)
</th>
<th></th>
</tr>
@for (int i = 0; i < Model.Count; i++)
{
<tr>
<td>
@if (Model[i].ImageData != null)
{
<div class="pull-left" style="margin-right: 10px">
<img class="img-thumbnail" width="75" height="75"
src="@Url.Action("GetImage", "MojitoProducts",
new { Model[i].MojitoProductId })" />
</div>
}
</td>
<td>
@Html.DisplayFor(modelItem => Model[i].ProductCategory)
</td>
<td>
@Html.TextBox("product[" + @i + "].Name",
Model[i].Name, new { @readonly = "readonly" })
</td>
<td>
@Html.DisplayFor(modelItem => Model[i].Description)
</td>
<td>
@Html.EnumDropDownListFor(modelItem => Model[i].TypeOfSubscription)
@Html.EnumDropDownListFor(modelItem => Model[i].TypeOfSubscription,
new { name = "product[" + @i + "].TypeOfSubscription"})
@Html.TextBox("product[" + @i + "].TypeOfSubscription",
Model[i].TypeOfSubscription, new { hidden=true })
</td>
<td>
@Html.TextBox("product[" + @i + "].Price",
Model[i].Price, new { @readonly = "readonly", style = "width:50px" })
</td>
<td>
@Html.TextBox("product[" + @i + "].NoOfUsers",
Model[i].NoOfUsers, new { type = "number", min = "0", style = "width:50px" })
</td>
<td>
@Html.TextBox("product[" + @i + "].TotalPrice",
Model[i].TotalPrice, new { style = "width:50px" })
</td>
<td>
<div class="pull-right">
@if (Request.Url != null)
{
@Html.Hidden("product[" + @i + "].MojitoProductId",
Model[i].MojitoProductId)
@Html.Hidden("returnUrl", Request.Url.PathAndQuery)
}
</div>
</td>
</tr>
}
<tr>
<td colspan="6">
<div class="pull-right">
<input type="submit" class="btn btn-success" value="Add to cart" />
</div>
</td>
</tr>
</table>
}
控制器方法
public ActionResult AddToCart(List<VmStoreProducts> product, string returnUrl)
{
ShoppingCart cartObjects = (Session["CartObjects"] as ShoppingCart) ?? new ShoppingCart();
Session["CartObjects"] = cartObjects;
foreach (var item in product)
{
if (item.NoOfUsers > 0)
{
cartObjects.AddItem(item);
}
}
return RedirectToAction("Index", new { returnUrl });
}
第一个是正确的用法（第二个是毫无意义的你不能重写'name'属性，第三个没有任何意义 - 它只会回传初始值）。 name属性将是'[0] .TypeOfSubscription'，因为那是你绑定的属性的名称。请张贴您的模型和'for'循环 – 2014-09-25 07:23:22
我已经发布了模型和视图for for循环。我正在考虑用Jquery编写一些东西，以便在枚举值更改时更新隐藏文本框的值。我相信这会起作用，但不知道这是否是最佳做法。 – ccocker 2014-09-25 08:00:25